import java.io.*; import org.apache.commons.httpclient.HttpClient;

import org.apache.commons.httpclient.methods.PostMethod;

import org.apache.commons.httpclient.methods.StringRequestEntity;

public static String requestPost(String url,String xmlFileName) {        HttpClient client = new HttpClient();        PostMethod myPost=new PostMethod(url);        String responseString=null;        try{
                //将文件内容写入变量            BufferedReader bfr=null;            StringBuffer sb=new StringBuffer();            bfr=new BufferedReader(new FileReader(new File(xmlFileName)));            String line=null;            while ((line=bfr.readLine())!=null){                sb.append(line);            }            myPost.setRequestEntity(new StringRequestEntity(sb.toString(),"text/xml","utf-8"));                    int statusCode = client.executeMethod(myPost);            if(statusCode == HttpStatus.SC_OK) {                BufferedInputStream bis = new BufferedInputStream(myPost.getResponseBodyAsStream());                byte[] bytes = new byte[1024];                ByteArrayOutputStream bos = new ByteArrayOutputStream();                int count = 0;                while ((count = bis.read(bytes)) != -1) {                    bos.write(bytes, 0, count);                }                byte[] strByte = bos.toByteArray();                responseString = new String(strByte, 0, strByte.length, "utf-8");                bos.close();                bis.close();                }            }catch (Exception e){                e.printStackTrace();            }        myPost.releaseConnection();        return responseString;    }